212395171 has 2 divisors, whose sum is σ = 212395172. Its totient is φ = 212395170.

The previous prime is 212395121. The next prime is 212395193. The reversal of 212395171 is 171593212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212395171 - 2⁹ = 212394659 is a prime.

It is a super-2 number, since 2×212395171² = 90223417328238482, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212395121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106197585 + 106197586.

It is an arithmetic number, because the mean of its divisors is an integer number (106197586).

Almost surely, 2^212395171 is an apocalyptic number.

212395171 is a deficient number, since it is larger than the sum of its proper divisors (1).

212395171 is an equidigital number, since it uses as much as digits as its factorization.

212395171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 31.

The square root of 212395171 is about 14573.7836885278. The cubic root of 212395171 is about 596.6434530396.

The spelling of 212395171 in words is "two hundred twelve million, three hundred ninety-five thousand, one hundred seventy-one".